[maemo-developers] [maemo-developers] launching applications via .desktop file, process priorities - scummvm problem

[From: Frantisek Dufka]

Hello,

it looks like when there is no service and non-maemo specific process is 
launched it runs with nice value of -1 i.e. it has higher priority than 
normal (example scummvm port). If it has service defined it has normal 
priority (example gaim). Both have similar .desktop files but the maemo 
specific one has some additional lines with service name etc.

Why the priorities differ? Can I tweak the priorities from the desktop 
file to set scummvm back to normal? Problem with scummvm is that the 
sound skips when it has higher priority. I suppose it is because sound 
daemon priority is lower.

One can find it with ps in xterm. scummvm has sign '<' if launched from 
menu. One can change it via renice command. renice 0 PID removes '<' 
renice 1 PID and above shows 'N'.

Is this bug or design issue?

Also what is the correct syntax for desktop file if I need to launch 
shell script and prevent it from being killed? Is it possible?
I cannot find list of maemo specific properties and their values and 
there is not much information here
http://www.maemo.org/platform/docs/howtos/howto_porting_an_existing_application.html#Adding-to-Menu
or here 
http://www.maemo.org/platform/docs/howtos/howto_new_application.html#Creating-desktop-file

Also the freedesktop specification does not help much
http://standards.freedesktop.org/desktop-entry-spec/desktop-entry-spec-0.9.4.html

Frantisek